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diff --git a/src/bench/CMakeLists.txt b/src/bench/CMakeLists.txt
--- a/src/bench/CMakeLists.txt
+++ b/src/bench/CMakeLists.txt
@@ -50,6 +50,7 @@
gcs_filter.cpp
lockedpool.cpp
mempool_eviction.cpp
+ mempool_stress.cpp
merkle_root.cpp
prevector.cpp
rollingbloom.cpp
diff --git a/src/bench/mempool_stress.cpp b/src/bench/mempool_stress.cpp
new file mode 100644
--- /dev/null
+++ b/src/bench/mempool_stress.cpp
@@ -0,0 +1,93 @@
+// Copyright (c) 2011-2019 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <bench/bench.h>
+#include <policy/policy.h>
+#include <random.h>
+#include <txmempool.h>
+
+#include <vector>
+
+static void AddTx(const CTransactionRef &tx, CTxMemPool &pool)
+ EXCLUSIVE_LOCKS_REQUIRED(cs_main, pool.cs) {
+ int64_t nTime = 0;
+ unsigned int nHeight = 1;
+ bool spendsCoinbase = false;
+ unsigned int sigOpCost = 4;
+ LockPoints lp;
+ pool.addUnchecked(CTxMemPoolEntry(tx, 1000 * SATOSHI, nTime, nHeight,
+ spendsCoinbase, sigOpCost, lp));
+}
+
+struct Available {
+ CTransactionRef ref;
+ size_t vin_left{0};
+ size_t tx_count;
+ Available(CTransactionRef &_ref, size_t _tx_count)
+ : ref(_ref), tx_count(_tx_count) {}
+};
+
+static void ComplexMemPool(benchmark::State &state) {
+ FastRandomContext det_rand{true};
+ std::vector<Available> available_coins;
+ std::vector<CTransactionRef> ordered_coins;
+ // Create some base transactions
+ size_t tx_counter = 1;
+ for (auto x = 0; x < 100; ++x) {
+ CMutableTransaction tx = CMutableTransaction();
+ tx.vin.resize(1);
+ tx.vin[0].scriptSig = CScript() << CScriptNum(tx_counter);
+ tx.vout.resize(det_rand.randrange(10) + 2);
+ for (auto &out : tx.vout) {
+ out.scriptPubKey = CScript() << CScriptNum(tx_counter) << OP_EQUAL;
+ out.nValue = 10 * COIN;
+ }
+ ordered_coins.emplace_back(MakeTransactionRef(tx));
+ available_coins.emplace_back(ordered_coins.back(), tx_counter++);
+ }
+ for (auto x = 0; x < 800 && !available_coins.empty(); ++x) {
+ CMutableTransaction tx = CMutableTransaction();
+ size_t n_ancestors = det_rand.randrange(10) + 1;
+ for (size_t ancestor = 0;
+ ancestor < n_ancestors && !available_coins.empty(); ++ancestor) {
+ size_t idx = det_rand.randrange(available_coins.size());
+ Available coin = available_coins[idx];
+ TxId txid = coin.ref->GetId();
+ // biased towards taking just one ancestor, but maybe more
+ size_t n_to_take =
+ det_rand.randrange(2) == 0
+ ? 1
+ : 1 + det_rand.randrange(coin.ref->vout.size() -
+ coin.vin_left);
+ for (size_t i = 0; i < n_to_take; ++i) {
+ tx.vin.emplace_back();
+ tx.vin.back().prevout = COutPoint(txid, coin.vin_left++);
+ tx.vin.back().scriptSig = CScript() << coin.tx_count;
+ }
+ if (coin.vin_left == coin.ref->vin.size()) {
+ coin = available_coins.back();
+ available_coins.pop_back();
+ }
+ tx.vout.resize(det_rand.randrange(10) + 2);
+ for (auto &out : tx.vout) {
+ out.scriptPubKey = CScript()
+ << CScriptNum(tx_counter) << OP_EQUAL;
+ out.nValue = 10 * COIN;
+ }
+ }
+ ordered_coins.emplace_back(MakeTransactionRef(tx));
+ available_coins.emplace_back(ordered_coins.back(), tx_counter++);
+ }
+ CTxMemPool pool;
+ LOCK2(cs_main, pool.cs);
+ while (state.KeepRunning()) {
+ for (auto &tx : ordered_coins) {
+ AddTx(tx, pool);
+ }
+ pool.TrimToSize(pool.DynamicMemoryUsage() * 3 / 4);
+ pool.TrimToSize(GetVirtualTransactionSize(*ordered_coins.front()));
+ }
+}
+
+BENCHMARK(ComplexMemPool, 1);
diff --git a/src/psbt.h b/src/psbt.h
--- a/src/psbt.h
+++ b/src/psbt.h
@@ -328,9 +328,6 @@
bool AddInput(const CTxIn &txin, PSBTInput &psbtin);
bool AddOutput(const CTxOut &txout, const PSBTOutput &psbtout);
PartiallySignedTransaction() {}
- PartiallySignedTransaction(const PartiallySignedTransaction &psbt_in)
- : tx(psbt_in.tx), inputs(psbt_in.inputs), outputs(psbt_in.outputs),
- unknown(psbt_in.unknown) {}
explicit PartiallySignedTransaction(const CMutableTransaction &txIn);
/**
* Finds the UTXO for a given input index

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